TM10-3930-660-20 Table 2-3. Mechanical Troubleshooting (Cont’d) MALFUNCTION TEST OR INSPECTION CORRECTIVE  ACTION Step 2. Check for intake air or exhaust leaks. Refer to Test 21. COOLANT TEMPERATURE Step 1. Step 2. Step 3. Step 4. Step 5. Check for low 10, Excessive Exhaust Smoke, in this table (Table 2-3). COOLING  SYSTEM ABOVE NORNAL coolant  level. a. Check and replenish coolant as necessary, para. 7-3. b. Locate and correct the source of the coolant leak. Refer to Test 23, Coolant Loss, in this table. Check for incorrect or malfunctioning radiator cap. A 6-8 psi radiator cap should be installed. Replace radiator pressure cap with correct rating if necessary. Check for loose drive belt. Check belt tension and replace belt if necessary, para. 7-9. by restrictions to the radiator. Check for inadequate air flow caused Remove restrictions. Check for plugged radiator fins. Inspect radiator and blow debris from radiator fins. 2-37